Allow vectorization of bit intrinsics in BB Vectorizer.

This patch adds support for vectorization of  bit intrinsics such as bswap,ctpop,ctlz,cttz.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207174 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Transforms/Vectorize.h

@@ -47,6 +47,9 @@ struct VectorizeConfig {
   /// @brief Vectorize floating-point math intrinsics.
   bool VectorizeMath;
 
+  /// @brief Vectorize bit intrinsics.
+  bool VectorizeBitManipulations;
+
   /// @brief Vectorize the fused-multiply-add intrinsic.
   bool VectorizeFMA;